Não informado. Philippine Journal of Surgical Specialties. Philippine College of Surgeons.
Chicago-referens (17:e uppl.)Não informado. Philippine Journal of Surgical Specialties. Manila: Philippine College of Surgeons.
MLA-referens (8:e uppl.)Não informado. Philippine Journal of Surgical Specialties. Philippine College of Surgeons.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.